[time-nuts] Timing between two GPS PPS outputs.
David J Taylor
david-taylor at blueyonder.co.uk
Mon Jan 7 12:02:43 UTC 2013
From: Gabs Ricalde
[]
Non-timing receivers could be unsuitable for your requirements, as
some of us have discovered:
http://www.satsignal.eu/ntp/Raspberry-Pi-NTP.html#oscillations
[]
=======================
Gabs,
The oscillations I reported are not due to the use of a navigation GPS
receiver. I have discovered one other difference between the two Raspberry
Pi PCs - firmware version. I upgraded the PC with the oscillation from
version 337601 to version 346337 firmware and this appears to have resolved
the issue. Fingers crossed! Once things have stabilised, you will find a
comparison between navigation (RasPi #1, MTK3339 Adafruit) and timing (RasPi
#2, Trimble Resolution SMT) receivers here:
http://www.satsignal.eu/mrtg/performance_ntp-pn.php
Cheers,
David
--
SatSignal Software - Quality software written to your requirements
Web: http://www.satsignal.eu
Email: david-taylor at blueyonder.co.uk
More information about the time-nuts
mailing list